function [eigen_vector] = myEigenVector(M,eiValue)
M = M-eiValue(1,1)*eye(3);


V(2,:) = M(2,:)-(M(1,:)/M(1,1)*M(2,1));
V(3,:) = M(3,:)-(M(1,:)/M(1,1)*M(3,1));
V(3,:) = V(3,:) - (V(2,:)/V(2,2)*V(3,2));
V(1,:) = V(1,:) - (V(2,:)/V(2,2)*V(1,2));
eigen_vector(1,:) = -(V(1,3)/V(1,1));
eigen_vector(2,:) = -(V(2,3)/V(2,2)); 
eigen_vector(3,:) = 1; 

end